they made models hillier number, nomenclature, describe kerry's that gun dealers are required to keep in iraq. , that allows atf in its state and local partners to conduct a crime gun traces and that's what they did. they trace back luck nine-millimeter to a woman named chandra. during that investigation, they learned chandra had bought a couple other guns turned up in crimes over the years. atf in chicago police officers interviewed chandra and she said after a while that she brought the gun for her boyfriend, samuel cox. she's a female cox is a convicted felon. can buy the guns themselves, so she bought them for them. police david samuel cox was an enforcer for the black gangster disciples in chicago. frankly, chandra was in a little trouble, so she was becoming more and more cooperative and she gave the atf agent in chicago police detect this key information. she said about eight years ago, two girlfriends came inside with how your car on blackstone avenue in a shooting. the next day we received a telephone call from somebody and they told us if we told anyone what we sow, we would